Honestly, the game itself is oriented to micromanagement. It could have a much better UI, and still that fact would remain. It’s a game where you have to put 1-6 magical items not to a handful of heroes like in a party based RPG, but to >60 units. Your dozens rat labs need that micro (research boosters, magic boosters for forging/casting, hammers), your thugs and SC need it, your battlemage corps need it, even your mundane commanders need it (morale/leadership items, some helmets and crossbows are a good idea too).
And that’s a single aspect of the game, there are more than even if improvements could be made, the entire design is oriented to micro.